Bad experience

I was excited to buy my first brand-new car. The only upgrade required was the electric windows. After having it for a month I took it for a long drive there was a draft coming into the car, window felt like it was open. Not a very fuel-efficient car. Radio no sound after 2 years, apparently the wires are corroded and this is my fault, keep in mind this is a brand new car. Now the car is overheating and this is my fault as well. Rs 16000 they want me to pay. I am so disgusted I wish I never stepped into Mahindra to purchase my first car. They got the money from the bank and everything is just past the buck